Mini Cooper R50 R52 R5
Status
In development / verification phase. The Mini Cooper ECU and instrument cluster electronics are based on BMW running gear, so this integration is adapted from the BMW E46 instructions.
Installation
Things you'll need
- PosiTap insulation piercing taps (22 gauge)
- RJ 45 (Ethernet) cable, ~6ft
- RaceCapture/Pro with Bluetooth
- Android tablet
- 2002-2006 Mini Cooper (R50, R52, R53)
Estimated Time
2-3 hours, depending on level of wiring experience. The most time consuming part is locating and splicing the CAN, power and groud wires into the RJ45 cable.
CAN wires
CAN wire colors are as follows:
- (VERIFY) Yellow/Red = CAN+ (high)
- (VERIFY) Yellow/Brown = CAN- (low)
They are a twisted pair in or attached to the main wiring harness under the driver's side dash above the dead pedal. The wires need to be tapped, not cut.
Tapping CAN wires
To tap into the wires, you'll first need to unravel the wire as the CAN+/CAN- pair are tightly wound. You'll want to have enough room for 2 fingers in between the wires.
Tapping the wires via Posi-taps (recommended) is easy. Pull the top off the Positap, place the wire in it and tighten.
Once you've tapped both it will most likely look like this:
Power and ground wiring
Note: You can skip this section if you already have power wired to RaceCapture/Pro and don't want to change it.
Best option OBD-II port power
Using the same cable used for the CAN bus connection you can tap into power on the OBD-II port, for a clean 4 wire connection
| Connection | Mini Cooper | RaceCapture/Pro (RJ45 cable) |
|---|---|---|
| +12v | (VERIFY) Yellow-Red (OBD-II connector) | Brown |
| Ground | (VERIFY) Brown (OBD-II connector) | Orange/White |
| CAN High | (VERIFY) Yellow/Red | Orange |
| CAN Low | (VERIFY) Yellow/Brown | Green/White |
Note: These color codes assume EIA-T568B RJ45 cable (check printing on the cable to confirm)
CAN Bus connection
In order for RaceCapture/Pro to read CAN data you need to connect the CAN+/CAN- wires to a RJ45 (ethernet cable).
Cut one end off the RJ45 cable and pull apart all the wires.
For a standard RJ45 cable (EIA T568B) the colors are:
- Orange: CAN1 High
- Green/white: CAN1 Low
- Brown: Power
- Orange/white: Ground
- Note: Verify your RJ45 cable has EIA T568B printed on the jacket; this will ensure the color codes match.
Use the following diagram:
You will end up with something that looks like this:
Configure RaceCapture/Pro
Quick Start configuration
This configuration can be imported into your RaceCapture/Pro system to get you started.
Download: Mini Cooper starter configuration (right-click, save-as)
To complete your configuration for lap timing and live streaming to Podium:
- Add your favorite race tracks for automatic detection
- Set your telemetry device id as provided by podium.live
Manual Setup
If you already have an existing, customized configuration, follow these steps to add Mini Cooper CAN bus integration.
Enable the CAN bus in your RaceCapture/Pro configuration
- Rate is 500kb/s
- Do not enable OBD-II channels.
Add this script to the Scripting section:
Script
--This example configured for Mini Cooper CAN
-- Automatically starts logging with engine 'on' (RPM triggered)
--how frequently we poll for CAN messages
tickRate = 30
--the CAN baud rate
CAN_baud = 500000
--CAN channel to listen on. 0=first CAN channel, 1=second
CAN_chan = 0
--add your virtual channels here
--format addChannel(<name>, <sample rate>, <precision>, <min>, <max>, [units])
tpsId = addChannel("TPS", 10, 0, 0, 100, "%")
tempId = addChannel("EngineTemp", 1, 0, 0, 255, "F")
oilTempId = addChannel("OilTemp", 1, 0, 0, 255, "F")
rpmId = addChannel("RPM", 10, 0, 0, 10000)
steerId = addChannel("Steering", 10, 0, -360, 360, "Deg.")
brakeId = addChannel("BrakeSw", 10, 0, 0, 1)
brakePressId = addChannel("Brake", 10, 0, 0, 255, "Bar")
clutchId = addChannel("Clutch", 10, 0, 0, 1)
lfWheelId = addChannel("LFWheelSpd", 10, 0, 0, 200, "MPH")
rfWheelId = addChannel("RFWheelSpd", 10, 0, 0, 200, "MPH")
lrWheelId = addChannel("LRWheelSpd", 10, 0, 0, 200, "MPH")
rrWheelId = addChannel("RRWheelSpd", 10, 0, 0, 200, "MPH")
gearTempId = addChannel("GearboxTmp", 10, 0, 0, 400, "F")
fuelId = addChannel("Fuel", 1, 0, 0, 100, "%")
extTempId = addChannel("ExtTemp", 1, 0, 0, 120,"F")
--Convert C to F
function toF(value)
return value * 1.8 + 32
end
--TPS, correct your throttle here for true 100%
function tpsFilter(value)
return value + 0.0
end
--only start logging / telemetry if engine is running
function rpmFilter(value)
if value > 500 then startLogging() else stopLogging() end
return value
end
function brakeFilter(value)
return bit.rshift(bit.band(value, 0x10), 4)
end
function clutchFilter(value)
return bit.band(value, 0x01)
end
function processWheel(id, data, offset)
--wheel speed is 13 bits long, little endian
--low byte high byte
--76543210 76543210
--11111111 11111XXX
local highByte = bit.band(data[offset + 2], 0x1F)
local lowByte = data[offset + 1]
local value = highByte * 256 + lowByte
value = value * 0.0625
--convert to MPH. comment to keep KPH
value = value * 0.621371
setChannel(id, value)
end
function processSteering(data)
local steer = 0
if data[2] > 127 then
steer = -1*(((data[2]-128)*256)+data[1])
else
steer = (data[2]*256)+data[1]
end
setChannel(steerId, (steer*0.045))
end
function fuelFilter(value)
--adjust for 7 bit value
value = bit.band(value, 0x7F)
--convert liters to %
return value / 0.48
end
function extTempFilter(value)
local temp = bit.band(value, 0x7F)
if value > 127 then
temp = -1 * temp
end
temp = toF(temp)
return temp
end
----------------------------------------
--customize here for CAN channel mapping
--format is:
--[CAN Id] = function(data) map_chan(<chan_id>, <data>, <CAN offset>, <CAN length>, <multiplier>,
-- <adder>, [filter])
----------------------------------------
CAN_map = {
[496] = function(data) processWheel(lfWheelId, data, 0)
processWheel(rfWheelId, data, 2)
processWheel(lrWheelId, data, 4)
processWheel(rrWheelId, data, 6)
end,
[339] = function(data) map_chan(brakeId, data, 0, 1, 1, 0, brakeFilter) end,
[504] = function(data) map_chan(brakePressId, data, 2, 1, 1, 0) end,
[809] = function(data) map_chan(tpsId, data, 5, 1 , 0.392156863, 0, tpsFilter)
map_chan(tempId, data, 1, 1, 0.75, -48, toF)
map_chan(clutchId, data, 3, 1, 1, 0, clutchFilter)
end,
[1349] = function(data) map_chan(oilTempId, data, 4, 1, 1, -48, toF) end,
[1083] = function(data) map_chan(gearTempId, data, 0, 1, 1, -55, toF) end,
[790] = function(data) map_chan(rpmId, data, 2, 2, 0.15625, 0, rpmFilter) end,
[501] = function (data) processSteering(data) end,
[1555] = function (data) map_chan(fuelId, data, 2, 1, 1, 0, fuelFilter) end,
[1557] = function (data) map_chan(extTempId, data, 3, 1, 1, 0, extTempFilter) end
}
function onTick()
processCAN(CAN_chan)
end
--===========do not edit below===========
function processCAN(chan)
local msg = 0
repeat
local id, e, data = rxCAN(chan, 0)
if id ~= nil then
local map = CAN_map[id]
if map ~= nil then
map(data)
end
end
msg = msg + 1
until id == nil or msg > 100
end
--Map CAN channel, little endian format
function map_chan(cid, data, offset, len, mult, add, filter)
if offset + len > #data then return end
offset = offset + 1
local value = 0
local shift = 1
while len > 0 do
value = value + (data[offset] * shift)
shift = shift * 256
offset = offset + 1
len = len - 1
end
local cv = value * mult + add
if filter ~= nil then cv = filter(cv) end
setChannel(cid, cv)
end
initCAN(CAN_chan, CAN_baud)
setTickRate(tickRate)
Test!
Once everything is connected, plug in the other end of the RJ45 cable to RaceCapture/Pro, turn it on and turn on your car. Make sure RCP is connected to your tablet and the RaceCapture/App is running.
Swipe to the digital dash page and you should see data for Coolant, Oil Temp, Throttle and brake!
Real-Time Telemetry
Just 4 wires - Power, Ground, CAN+ and CAN- is needed to stream tons of data to Podium for monitoring engine, driver and suspension performance!
Troubleshooting
- If you don't see any data, verify all connections and splices.
- If everything is connected connect your laptop to RaceCapture/Pro, open the RaceCapture/App, go to the Scripting section, set Logging Level to debug and select 'Poll logfile'. Check the output for any errors relating to the Lua Script.
- If you're copying in the script file, ensure any existing script is erased first, do not append the script text to the existing script.
If you are still having issues post your problem on the forums here http://www.autosportlabs.org/viewforum.php?f=20
